Rotation speculation

So it's a long way from cataclysm, but it's still fun to think what the new stuff will do for our rotations. A lot will depend on cooldowns, scale factors, and damage of the new spells, none of which is out yet, but it's not too early to get an idea for what Cataclysm might mean for the relative complexity of your spells.

Note: I'm not hammering down priorities entirely, since shifting talent support may move spells around even relative to their current places. Basically setting up 4 priorities: Maintain debuffs, refresh DOTs, short cooldowns (the likes of conflag and chaos bolt), and filler.

Affliction
>25%
Debuffs: Haunt
DOTs: Corruption (one time), UA (once), Bane of Agony

Fel Flame (refresh UA)
Shadowbolt
<25%
Debuffs: haunt, improved shadowbolt
Filler: Drain soul (pandemic will maintain BoA and UA)
Cooldowns: Demon Soul

Compared to right now, looks like pretty much status quo above 25% - fel flame will likely be the pick to refresh UA instead of recasting it, but it's the same level of complexity we have right now. Execute range, however, the rotation collapses pretty hard - drain soul will be refreshing ALL THREE of your DOTs, and with haste no longer reducing duration, there'll be pretty much no worry about them falling, ever.

Demonology
>35%
Debuffs: Demon Bolt
DOTs: Corruption, immolate (once), BoD
Fel Flame (refresh immolate) *this assumes Fel Flame hits harder than the immolate nuke, which it almost certainly will with immolate's split spellpower coefficient
Shadowbolt
<35%
Debuffs: Demon bolt, ISB
DOTs: Corruption, BoD
Fel Flame to keep immolate going
Soulfire
Cooldowns: Demon Soul, Metamorphosis>Immolation Aura, Demonic Empowerment

Here, actually looks like a net gain in complexity for a complex spec - how demon soul and metamorphosis would interact is interesting in itself. This is, of course, assuming demon bolt is "Haunt for Pets" and not a new primary nuke, which it yet could be.

Destruction
>25%
DOTs: immolate (once), BoD
Fel Flame to keep immolate up
Short cooldowns: Conflag, CB
Incinerate
<25%
DOTs: BoD
Fel Flame for immo
Short cooldowns: Conflag, CB, shadowburn (depending on how good the execute boost is)
Incinerate
Cooldowns: Demon Soul

Not a big change for destruction as things stand. Fel Flame basically replaces immolate refresh. Only real change looks like it might be a Shadowburn execute. Unless shadowburn is Jesus Almighty sub 25% it's not going to be an execute on par with soulfire or drain soul, but it's an execute nonetheless, and it will help destruction compete with the other specs.